London: Harry Potter star David Bradley has been cast as the very first Doctor Who in a new TV movie celebrating the 50th anniversary of the cult sci-fi drama.
The first image of the actor, who portrayed Hogwarts caretaker Argus Filch in the Potter films, as the late William Hartnell have appeared online.
`Doctor Who` executive producer Steven Moffat has now opened up about film tribute `An Adventure in Space and Time`, which will debut on the BBC later this year, reported Daily Star.
The project chronicles the birth of the `Doctor Who` franchise and how veteran thespian Hartnell became a TV sensation overnight back in the 1960s.
"It`s the story of this unexpected Indian summer William Hartnell had at the end of his career. He thought he was all washed up, and then suddenly he`s this huge star, and he goes through the experience of that and the experience of leaving it," Moffat said.